Log into it with admin privelidges by booting up in safemode and logging into the admin account, most people never put a password on for that account because they normally use another user account with a custom name, from there you can do anything you like.

Log into it with admin privelidges by booting up in safemode and logging into the admin account, most people never put a password on for that account because they normally use another user account with a custom name, from there you can do anything you like.